Electric-light cluster



H. C. NOE, ELECTRIC LIGHT CLUSTER.

APPLICATION nuao MAY 20, 1920.

1,366,093, I Patented Jan. 18,1921.

UNITED STATES HAROLD G. NOE, OF EAST ORANGE, NEW JERSEY.

ELECTRIC-LIGHT CLUSTER.

Specification of Letters Patent. Patented J an. 18, 1921.

Application filed May 20, 1020. Serial 1N0. 332,833.

T 0 all whom it may concern Be it known that I, HAROLD C. Non, a citizenof the United States, residing at East Orange, in the county of Essexand State oi? New Jersey, have invented a certain new and usefulImprovement in Electric-Light Clusters, of which the following is aspecification. j

The invention relates to means for supporting'electric lamp-sockets on astandard, usually in pairs or clusters extending (lially from thestandard and angular-1y thereto, and the objectof the invention is toprovide simple, easily operated. means for varying the angular positionsof the sockets vertically as desired and for holding the socketsreliably in the adjusted positions against any strains tending todepress them, as for example, the strain of the switchchain in lightingor extinguishing the lamps.

The invention consists in certain novel featnl'esof construction andarrangement by which the above objects are attained, to be hereinafterdescribed and claimed.

The accompanying drawings form a part of this specification and show theinvention as it has been carried out in practice, ap

plied to a standard having a cluster of four lamps.

Figure 1 is an elevation showing-the upper end of a standard thusequipped.

shell.

i are attached.

Fig. 2 is a corresponding vertical section,

partly in elevation. c c

Fig. 3 is a plan view with a portion re moved to show the arms to whichthe sockets Fig. 4; is a perspective view of one of such arms.

Similar letters of reference indicate the same parts in all the figures.The standard comprises a vertical. tube A adapted to contain the wiresor conduits for the lamps, having a hemispherical cup B at the upperend, covered by a hemispherical cap ill forming with the cup a sphericala central opening in the cup and receives a. threaded collar D whichclamps the cup firmly to the tube. j

Above thecollar Dis a pedestal D joined to the collar by arms l) formingwith the collar an open frame within the shell. Into the pedestal D isscrewed a vertical. screw threaded stud F extending axially of the shelland projecting through a central hole the cup B;

screw-threaded ,hollow nipple A at the upper end of the tube extendsthrough in the cap C; The protruding end receives a capnut E by whichthe cap C is held to The latter'is provided with vertical slits or deepnotches b extending downwardly from its flange or skirt C inclosing suchrim.

x G arelamp-socketsof any approved type, shown as equipped with pulls orswitcli-chains G and adapted to receive the usual lamp bulbs, not shown.Each socket is screwed upon a nipple H projecting radially through oneof the slits b and mounted on the lower end oi? a curved arm H. withinthe shell.- Eacharm H is provided with a longitudinally extending slot hreceiving the stud F. l

Four arms H are shown in the drawings arranged at an angle of 90 each tothe other, with four sockets Gr extending radially from the cup 13. Thefour arms lie one upon the other with the lowermost slipported upon anabutment J, shown as a nut, on the stud F, and the uppermost supportsthe cap Thus arranged the'act of screwing the cap-nut E unonthe stud Fforces down the-cap C and compresses the arms H ietween latter and theabutment J, and by the frictional contact thus induced holds the armsfirmly against longitudinal move ment in the direction permitted by theengagement of the stud l? in the slots h and the nipples H in the slitsb.

The armsare of thin metal and are curved on radii corresponding totheinterior of the spherical shell formed by the cap and cup, so that whenthe pressure is lessened by relaxingthecapmut E, the nipples H to rim,and the cap Chas a and" connected lamp-socketsmay be moved up or down inthe slits Z) to an extent determined by the length of the slits orlengthof the slots 71. inclosing the stud F.

Sufiicient friction may be maintained to hold each socket in the desiredangular position until all are adjusted, and a further tighteningof thecap-nut binds all the arms frictionally and all the sockets are thusheld firmly and reliably.

Any number-of arms may be employed with a correspondingly slitted cup,by adjustingthethreaded abutment J to the space occupied by thesuperposed arms Has will be understood.

The sockets G may be attached to the nipples H while the arms H areremoved from the cup B and the wiring easily accomplished with the partsthus exposed; the

arms H are then successively threaded upon the stud F through the slotsh, with the nip ples H inserted in the open ends of the slits b andmoved downward therein. The cap C is then applied and the cap-nut Escrewed on the stud to induce a degree of friction suflicient toholdthearms temporarily while the sockets are adjusted to the desired verticalangle, and then tightened to hold the arms securely in the adjustedpositions.

Theopen frame formed by the collar D I and its arms D and pedestal Dpermits the Fig. 1;

Iclaimz- 1. In a device of the character, set forth, a cup having, slitstherein, a plurality of superimposed arms Within said cup, havingnipples extended outwardly through. such slits, movable in the latterand adjustable in the direction of the length thereof, adapted to carrylamp-sockets, and means for clamp- .lng said arms. one upon the other tohold such sockets in position.

'2. In aadevlce of the character set torth,

I a cuphaving slits therein, a stud in said cup, a plurality ofsuperimposed arms each having a slot'inclosing said stud, and a nippleextended outwardly through one of such slits, adapted to: carry alamp-socket, and means coactingwith said stud for clamping;- said'armsone uponvthe other to hold such sockets in position. 7

3'. In a deviceot the character set forth,

' a hemisphericahcup having'slits therein, a

plurality of; superimposed curved arms Within saidcup, each having anipple extended through oneof. such slits and adapted to carryalamp-socket, and means for compressing said arms'into strongfrictional.

- contact I with each other.

4. In adevice of: the character set forth,

hemisphericalcup having slits-therein, a

hemispherical cap covering said;v cup and form ngwlth the' latter aspherical shell, a

stud in such shell extending through said I cap, a plurality of cur'vedarms within such andv a/nipple extended= outwardly through one of. such.slits, adapted-to carry'a lampshell, each havinglaslot-inclosing-said-stud.

socket, an abutment on said stud beneath said arms, and a nut on saidstud exterior of said cap.

5. A hemispherical cup having slits llllkfl in, a hemispherical capcovering said cup and forming with the la t ter a splu- 4. an axiallloanted stud in s. eh shell 0 ed through said cap. a plurality ofsuporinr posed curved arms within said shell, each having a slotinclosingsaid stud, and a nipple extended outwardly through one of" suchslits, adapted to carry a. lamp-socket, an abutment on said stud beneathsaid arms. and means operable on the erztcrior ol such shell andcoacting with said stud and abutment for compressing said arms upon eachother.

6. In a device oi the character set forth. a cup having slits therein, aplurality ol superimposed arms within said rup, each having a. nippleextended outwardly through one of such slits, a stud in said cup 0);-tended through said arms. an abutment on said stud beneath said arms,and means above said-arms, coactinpwith said stud and abutment forcompressing), said arms upon each other.

7. In a device of the charactm set forth. a llGIlHSPllGllCtl cup havmg aslit tlwreiu. an armin said cup curved substantially concentrically tosaid cup, having at one end a longitudinal slot and at the other end anipple extended outwardly through such slit and adapted to carry alamp-socket. an abut ment in said cup, and means extending through suchslot for clamping saidarm to said abutment.

S. In a device of the character set forth. a hemispherical cup havingslits therein, a plurality of arms in said cup curved substantiallyconcentrically to sai cup and rerlapping one upon another, each of saidarms having a slot and a nipple extended outwardly through one of suchslits and adapted to carry a lamp-socket, a stud in said cup extendingthrough such dots. an adjustable abutment on said stud beneath saidarms, and a nut on said stud ahovc said arms, adapted to compress saidarms upon each other.

9. In a device of the character set forth, a cup having slits therein. aplurality of arms within said cup, having nipples extended outwardlythrough said slits, movable in the latter and adapted to carrylamp-sockets. and means for clamping; said arms to hold such sockets inposition.

In testimony that I claim the invention above set forth I affix mysignature HAROLD (l. NOE.

shell.

